Show SKU numbers on product pages

Caution

Vintage themes aren't available in the Theme Store. Vintage themes don't have the features included in Shopify's Online Store 2.0 themes, and Shopify free vintage themes don't receive updates except security fixes.

Note

If you use a free theme from Shopify, then you can contact Shopify Support for help with this tutorial. It requires 15 minutes of design time. Learn more about the Shopify Design Policy.

Note

This customization is for vintage Shopify themes, and doesn't apply to Online Store 2.0 themes.

• Find out your theme's architecture version
• Explore Online Store 2.0 theme customizations

SKUs (stock keeping units) are numbers, typically alphanumeric, that are used to help identify products and track inventory. If a store uses SKUs, then a unique number is assigned to each individual product variant. You can show SKU numbers for variants on your product pages by editing your theme code:

Sectioned and non-sectioned themes

Note

The steps for this tutorial differ depending on whether you're using a sectioned or a non-sectioned theme. A sectioned theme lets you drag and drop to arrange the layout of your home page, and a non-sectioned theme doesn't.

To figure out whether your theme supports sections, go to the theme's Edit code page. If there are files in the Sections directory, then you're using a sectioned theme. Non-sectioned themes were released before October 2016, and don't have files in the Sections directory.

If you're using a sectioned theme, then click the Sectioned themes button and follow the instructions. If you're using an older, non-sectioned theme, then click the Non-sectioned themes button and follow the instructions.

Steps for Sectioned themes

Show SKU numbers on product pages

1. From your Shopify admin, go to Online Store > Themes.

2. Find the theme you want to edit, click the … button to open the actions menu, and then click Edit code.

3. In the Sections directory, click product.liquid or product-template.liquid.

4. Find the following Liquid tag:

{{ product.title }}

This is the code that renders your product titles on the product page.

5. On a new line below the line of code that includes {{ product.title }}, paste the following code:

{% assign current_variant = product.selected_or_first_available_variant %}
<span class="variant-sku">{{ current_variant.sku }}</span>

6. Click Save.

Select your theme

The next steps for this customization vary depending on your theme. Click the button for your theme and follow the instructions.

Boundless

Steps for Boundless

1. In the Assets directory, click theme.js.liquid.
2. Look for variant.sku:
   • If you're able to find variant.sku, then you have completed the customization.
   • If you're unable to find variant.sku, then continue to the next step.
3. At the bottom of the file, paste the following code:

document.addEventListener('DOMContentLoaded', () => {
  setTimeout(function() {
    const productJson = [...document.querySelectorAll('[id^=ProductJson-')];
    if (productJson.length > 0) {
      productJson.forEach((product) => {
        const sectionId = product.id.replace("ProductJson-", "shopify-section-");
        const variantSKU = document.querySelector('#' + sectionId + ' .variant-sku');
        const inputSelects = [...document.querySelectorAll('#' + sectionId + ' .single-option-selector')];
        const productInfo = JSON.parse(product.innerHTML);
        const inputValues = [];
        const optionValues = [];
        let count = 0;
        inputSelects.forEach((input) => {
          inputValues.push(input.value);
          optionValues.push(count);
          input.addEventListener('change', (evt) => {
            const currentValue = evt.currentTarget.value.toString();
            const changedIndex = inputSelects.indexOf(evt.target);
            inputValues[changedIndex] = currentValue;
            variantSKU.innerText = ' ';
            productInfo.variants.forEach((variant) => {
              if (JSON.stringify(variant.options) == JSON.stringify(inputValues)) {
                variantSKU.innerText = variant.sku;
              }
            });
          });
          count += 1;
        });
      });
    }
  }, 100);
});

4. Click Save.

Brooklyn

Steps for Brooklyn

1. In the Assets directory, click theme.js.liquid.
2. Look for variant.sku:
   • If you're able to find variant.sku, then you have completed the customization.
   • If you're unable to find variant.sku, then continue to the next step.
3. At the bottom of the file, paste the following code:

document.addEventListener('DOMContentLoaded', () => {
  const productJson = [...document.querySelectorAll('[id^=ProductJson-')];
  if (productJson.length > 0) {
    productJson.forEach((product) => {
      const sectionId = product.id.replace("ProductJson-", "shopify-section-");
      const variantSKU = document.querySelector('#' + sectionId + ' .variant-sku');
      const productInfo = JSON.parse(product.innerHTML);
      const radioButtons = document.querySelector('.single-option-radio');
      let inputSelects;
      if (radioButtons !== null) {
        inputSelects = [...document.querySelectorAll('#' + sectionId + ' .single-option-radio')];
      } else {
        inputSelects = [...document.querySelectorAll('#' + sectionId + ' .single-option-selector__radio')];
      }
      const inputValues = [];
      const optionValues = [];
      let count = 0;
      inputSelects.forEach((input) => {
        if (radioButtons !== null) {
          inputValues.push(input.firstElementChild.value);
        } else {
          inputValues.push(input.value);
        }
        optionValues.push(count);
        input.addEventListener('change', (evt) => {
          const currentValue = evt.target.value.toString();
          const changedIndex = inputSelects.indexOf(evt.currentTarget);
          inputValues[changedIndex] = currentValue;
          variantSKU.innerText = ' ';
          productInfo.variants.forEach((variant) => {
            if (JSON.stringify(variant.options) == JSON.stringify(inputValues)) {
              variantSKU.innerText = variant.sku;
            }
          });
        });
      count += 1;
      });
    });
  }
});

4. Click Save.

Debut

Steps for Debut

1. In the Assets directory, click theme.js.
2. Look for variant.sku:
   • If you're able to find variant.sku, then you have completed the customization.
   • If you're unable to find variant.sku, then continue to the next step.
3. At the bottom of the file, paste the following code:

document.addEventListener('DOMContentLoaded', () => {
  const productJson = [...document.querySelectorAll('[id^=ProductJson-')];
  if (productJson.length > 0) {
    productJson.forEach((product) => {
      const sectionId = product.id.replace("ProductJson-", "shopify-section-");
      const variantSKU = document.querySelector('#' + sectionId + ' .variant-sku');
      const inputSelects = [...document.querySelectorAll('#' + sectionId + ' .single-option-selector')];
      const productInfo = JSON.parse(product.innerHTML);
      const inputValues = [];
      const optionValues = [];
      let count = 0;
      inputSelects.forEach((input) => {
        inputValues.push(input.value);
        optionValues.push(count);
        input.addEventListener('change', (evt) => {
          const currentValue = evt.currentTarget.value.toString();
          const changedIndex = inputSelects.indexOf(evt.target);
          inputValues[changedIndex] = currentValue;
          variantSKU.innerText = ' ';
          productInfo.variants.forEach((variant) => {
            if (JSON.stringify(variant.options) == JSON.stringify(inputValues)) {
              variantSKU.innerText = variant.sku;
            }
          });
        });
        count += 1;
      });
    });
  }
});

4. Click Save.

Express

Steps for Express

1. In the Layout directory, click theme.liquid.
2. Find the closing </body> tag.
3. On the line immediately above the closing </body> tag, paste the following code:

<script>
document.addEventListener('DOMContentLoaded', () => {
  const productJson = [...document.querySelectorAll('[data-product-json]')];
  if (productJson.length > 0) {
    productJson.forEach((product) => {
      const sectionId = "shopify-section-" + product.closest('[data-section-id]').dataset.sectionId;
      const variantSKU = document.querySelector('#' + sectionId + ' .variant-sku');
      const inputSelects = [...document.querySelectorAll('#' + sectionId + ' .form__input--select')];
      const productInfo = JSON.parse(product.innerHTML);
      const inputValues = [];
      const optionValues = [];
      let count = 0;
      inputSelects.forEach((input) => {
        inputValues.push(input.value);
        optionValues.push(count);
        input.addEventListener('change', (evt) => {
          const currentValue = evt.currentTarget.value.toString();
          const changedIndex = inputSelects.indexOf(evt.target);
          inputValues[changedIndex] = currentValue;
          variantSKU.innerText = ' ';
          productInfo.variants.forEach((variant) => {
            if (JSON.stringify(variant.options) == JSON.stringify(inputValues)) {
              variantSKU.innerText = variant.sku;
            }
          });
        });
        count += 1;
      });
    });
  }
});
</script>

4. Click Save.

Minimal

Steps for Minimal

1. In the Assets directory, click theme.js.
2. Look for variant.sku:
   • If you're able to find variant.sku, then you have completed the customization.
   • If you're unable to find variant.sku, then continue to the next step.
3. At the bottom of the file, paste the following code:

document.addEventListener('DOMContentLoaded', () => {
  const productJson = [...document.querySelectorAll('[id^=ProductJson-')];
  if (productJson.length > 0) {
    productJson.forEach((product) => {
      const sectionId = product.id.replace("ProductJson-", "shopify-section-");
      const variantSKU = document.querySelector('#' + sectionId + ' .variant-sku');
      const inputSelects = [...document.querySelectorAll('#' + sectionId + ' .single-option-selector')];
      const productInfo = JSON.parse(product.innerHTML);
      const inputValues = [];
      const optionValues = [];
      let count = 0;
      inputSelects.forEach((input) => {
        inputValues.push(input.value);
        optionValues.push(count);
        input.addEventListener('change', (evt) => {
          const currentValue = evt.currentTarget.value.toString();
          const changedIndex = inputSelects.indexOf(evt.target);
          inputValues[changedIndex] = currentValue;
          variantSKU.innerText = ' ';
          productInfo.variants.forEach((variant) => {
            if (JSON.stringify(variant.options) == JSON.stringify(inputValues)) {
              variantSKU.innerText = variant.sku;
            }
          });
        });
        count += 1;
      });
    });
  }
});

4. Click Save.

Narrative

Steps for Narrative

1. In the Assets directory, click custom.js.
2. At the bottom of the file, paste the following code:

document.addEventListener('DOMContentLoaded', () => {
  const productJson = [...document.querySelectorAll('[data-product-json]')];
  if (productJson.length > 0) {
    productJson.forEach((product) => {
      const sectionId = "shopify-section-" + product.closest('[data-section-id]').dataset.sectionId;
      const variantSKU = document.querySelector('#' + sectionId + ' .variant-sku');
      const inputSelects = [...document.querySelectorAll('#' + sectionId + ' .single-option-selector')];
      const productInfo = JSON.parse(product.innerHTML);
      const inputValues = [];
      const optionValues = [];
      let count = 0;
      inputSelects.forEach((input) => {
        inputValues.push(input.value);
        optionValues.push(count);
        input.addEventListener('change', (evt) => {
          const currentValue = evt.currentTarget.value.toString();
          const changedIndex = inputSelects.indexOf(evt.target);
          inputValues[changedIndex] = currentValue;
          variantSKU.innerText = ' ';
          productInfo.variants.forEach((variant) => {
            if (JSON.stringify(variant.options) == JSON.stringify(inputValues)) {
              variantSKU.innerText = variant.sku;
            }
          });
        });
        count += 1;
      });
    });
  }
});

3. Click Save.

Simple

Steps for Simple

1. In the Assets directory, click theme.js.liquid.
2. Look for variant.sku:
   • If you're able to find variant.sku, then you have completed the customization.
   • If you're unable to find variant.sku, then continue to the next step.
3. At the bottom of the file, paste the following code:

document.addEventListener('DOMContentLoaded', () => {
  const productJson = [...document.querySelectorAll('[id^=ProductJson-')];
  if (productJson.length > 0) {
    productJson.forEach((product) => {
      const sectionId = product.id.replace("ProductJson-", "shopify-section-");
      const variantSKU = document.querySelector('#' + sectionId + ' .variant-sku');
      const inputSelects = [...document.querySelectorAll('#' + sectionId + ' .single-option-selector')];
      const productInfo = JSON.parse(product.innerHTML);
      const inputValues = [];
      const optionValues = [];
      let count = 0;
      inputSelects.forEach((input) => {
        inputValues.push(input.value);
        optionValues.push(count);
        input.addEventListener('change', (evt) => {
          const currentValue = evt.currentTarget.value.toString();
          const changedIndex = inputSelects.indexOf(evt.target);
          inputValues[changedIndex] = currentValue;
          variantSKU.innerText = ' ';
          productInfo.variants.forEach((variant) => {
            if (JSON.stringify(variant.options) == JSON.stringify(inputValues)) {
              variantSKU.innerText = variant.sku;
            }
          });
        });
        count += 1;
      });
    });
  }
});

4. Click Save.

Supply

Steps for Supply

1. In the Assets directory, click theme.js.liquid.
2. Look for variant.sku:
   • If you're able to find variant.sku, then you have completed the customization.
   • If you're unable to find variant.sku, then continue to the next step.
3. At the bottom of the file, paste the following code:

document.addEventListener('DOMContentLoaded', () => {
  const productJson = [...document.querySelectorAll('[id^=ProductJson-')];
  if (productJson.length > 0) {
    productJson.forEach((product) => {
      const sectionId = product.id.replace("ProductJson-", "shopify-section-");
      const variantSKU = document.querySelector('#' + sectionId + ' .variant-sku');
      const inputSelects = [...document.querySelectorAll('#' + sectionId + ' .single-option-selector')];
      const productInfo = JSON.parse(product.innerHTML);
      const inputValues = [];
      const optionValues = [];
      let count = 0;
      inputSelects.forEach((input) => {
        inputValues.push(input.value);
        optionValues.push(count);
        input.addEventListener('change', (evt) => {
          const currentValue = evt.currentTarget.value.toString();
          const changedIndex = inputSelects.indexOf(evt.target);
          inputValues[changedIndex] = currentValue;
          variantSKU.innerText = ' ';
          productInfo.variants.forEach((variant) => {
            if (JSON.stringify(variant.options) == JSON.stringify(inputValues)) {
              variantSKU.innerText = variant.sku;
            }
          });
        });
        count += 1;
      });
    });
  }
});

4. Click Save.

Venture

Steps for Venture

1. In the Assets directory, click theme.js.
2. Look for variant.sku:
   • If you're able to find variant.sku, then you have completed the customization.
   • If you're unable to find variant.sku, then continue to the next step.
3. At the bottom of the file, paste the following code:

document.addEventListener('DOMContentLoaded', () => {
  const productJson = [...document.querySelectorAll('[id^=ProductJson-')];
  if (productJson.length > 0) {
    productJson.forEach((product) => {
      const sectionId = product.id.replace("ProductJson-", "shopify-section-");
      const variantSKU = document.querySelector('#' + sectionId + ' .variant-sku');
      const inputSelects = [...document.querySelectorAll('#' + sectionId + ' .single-option-selector')];
      const productInfo = JSON.parse(product.innerHTML);
      const inputValues = [];
      const optionValues = [];
      let count = 0;
      inputSelects.forEach((input) => {
        inputValues.push(input.value);
        optionValues.push(count);
        input.addEventListener('change', (evt) => {
          const currentValue = evt.currentTarget.value.toString();
          const changedIndex = inputSelects.indexOf(evt.target);
          inputValues[changedIndex] = currentValue;
          variantSKU.innerText = ' ';
          productInfo.variants.forEach((variant) => {
            if (JSON.stringify(variant.options) == JSON.stringify(inputValues)) {
              variantSKU.innerText = variant.sku;
            }
          });
        });
        count += 1;
      });
    });
  }
});

4. Click Save.

Add SKU numbers to your product variants from the admin

To have SKUs appear on your product pages, you must add SKU numbers to your product variants from in Shopify admin.

1. From your Shopify admin, go to Products.

2. Click the product that you want to edit.

3. For products with multiple variants, in the Variants section, add your SKU numbers:

   

   For products without variants, in the Inventory section, add your SKU number:

   

4. Click Save.

Steps for Non-sectioned themes

Show SKU numbers on product pages

Note

This customization doesn't work for the non-sectioned Boundless theme. Non-sectioned themes were released before October 2016, and don't have files in the Sections directory.

Steps:

1. From your Shopify admin, go to Online Store > Themes.

2. Find the theme you want to edit, click the … button to open the actions menu, and then click Edit code.

3. In the Templates directory, click product.liquid.

4. Find the following Liquid tag:

{{ product.title }}

This is the code that renders your product titles on the product page.

5. On a new line below the line of code that includes {{ product.title }}, paste the following:

{% assign current_variant = product.selected_or_first_available_variant %}
<span class="variant-sku">{{ current_variant.sku }}</span>

6. Click Save.
7. If you're using a free Shopify theme that isn't Brooklyn or Venture, then find the following line of code:

var selectCallback = function(variant, selector) {

If you cannot find the above line of code in product.liquid, then you will find it in theme.liquid, in the Layout directory.

• Brooklyn and Venture: If you are using Brooklyn or Venture, then you will need to find and edit a different line of code. In the Assets directory, click theme.js.liquid, and find the following line of code:

theme.productVariantCallback = function (variant, selector) {

8. On a new line below, paste the following code:

if (variant) {
      document.querySelector('.variant-sku').innerText = variant.sku;
    }
    else {
      document.querySelector('.variant-sku').innerText = '';
    }

Your code should look something like this:

var selectCallback = function(variant, selector) {

      if (variant) {
        document.querySelector('.variant-sku').innerText = variant.sku;
      }
      else {
        document.querySelector('.variant-sku').innerText = '';
      }

        self.productPage({
          money_format: theme.moneyFormat,
          variant: variant,
          selector: selector,
          translations: {
            add_to_cart : theme.productStrings.addToCart,
            sold_out : theme.productStrings.soldOut,
            unavailable : theme.productStrings.unavailable
          }
        });
      };

9. Click Save.

Add SKU numbers to your product variants from the admin

To have SKUs appear on your product pages, you must add SKU numbers to your product variants from in Shopify admin.

1. From your Shopify admin, go to Products.

2. Click the product that you want to edit.

3. For products with multiple variants, in the Variants section, add your SKU numbers:

   

   For products without variants, in the Inventory section, add your SKU number:

   

4. Click Save.